/Engine/Source/Editor/UnrealEd/Public/LODCluster.h
This is used by Hierarchical LOD Builder to generates list of clusters that are together in vicinity and build as one actor
struct FLODCluster
TSet<AActor&#...
Actors
Member variable
FSphere
Bound
Cluster bounds
double
ClusterCost
Cached cluster cost,FMath::Pow(Bound.W, 3) / FillingFactor
double
FillingFactor
Filling factor for this cluster, determines how much of the cluster's bounds/area is occupied by the contained actors